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Microwave Quantum Optics

Edited by Gerard Milburn, Per Delsing, Tom Stace and Tim Duty

Advances in superconducting quantum circuits and microwave resonators now enable quantum optical experiments to be carried out at microwave frequencies. The ability to engineer very large dipole interactions enables one to achieve coupling regimes that are difficult if not impossible to achieve in atomic systems. The rapid modulation of microwave resonator SQUID devices enables strong parametric driving to be achieved giving access to very strong squeezing, and the ability to engineer arbitrary few-photon superposition states developed for quantum computing applications provides a powerful new resource in the microwave domain.

A Superconducting QUantum Interference Device (SQUID) modulated by a fast oscillating magnetic flux can be used as a parametric amplifier, providing gain with very little added noise. Here, we develop lineariz...

A superconducting microwave resonator is modified with several weak links to make it nonlinear and operated as a phase-insensitive microwave amplifier. Signal gain is demonstrated by intermodulation with a str...

For a one-dimensional (1D) waveguide coupled to two or three qubits, we show that the photon-photon correlations have a wide variety of behavior, with structure that depends sensitively on the frequency and on...

One of the central challenges in the development of parametric amplifiers is the control of the dynamic range relative to its gain and bandwidth, which typically limits quantum limited amplification to signals...